Fluid-dispensing control.



.I. I. CATRON.

FLUID DISPENSING CONTROL.

APPLICATION FILED MAY 7 I918.

1,301,385, Patented Apr. 22, 1919.

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I INVENTOR.

j. J. GATRON.

FLUID DISPENSING CONTROL. APPLICATION FILED MAY 7. 1918.

1,301,385,, Patented Apr. 22,1919.

2 SHEETSSHEET 2.

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ATTORNEY.

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JOHN J. CATRON, OF BONI-IAM, TEXAS.

FLUID-DISPENSING CONTROL.

Specification of Letters Patent.

Patented Apr. 22, 1919.

Application filed May 7, 1918. Serial No. 233,083.

T 0 all whom it may concern:

Be it known that I, JOHN J. CATRON, a

citizen ofthe United States, residing at Bonham, in the county of Fanninand'Sta-te of Texas, have invented certain new and useful a suitablevalve arrangement or control. It

is this valve arrangement or control with which my invention has to doand the idea involved is to control the discharge offluid and the supplyof compressed air in a simple and efficient manner and with a minimumexpenditure of air. It is further proposed to employ the expansive forceof the air to elevate and discharge the fluid and to arrange the entireapparatus under direct control of the operator.

In carrying out the invention it is proposed to arrange a fluiddischarge valve and to correlate with the same a compressed air supplyvalve both of which valves are connected with the receptacle from whichthe liquid is to be elevated and discharged, for instance such as isshown in my Letters Patent issued July 21st, 1914, No. 1,103,939. Thevalves are so arranged and timed that the discharge valve is opened inadvance of the compressed air valve and remains open when the air valveis opened. The parts are arranged so that after the compressed air hasbeen supplied the air valve may be closed without closing the dischargevalve and thus the air under pressure which has been delivered is givenan opportunity to expand and discharge the liquid through the dischargevalve. A normally open air Vent is associated, with the valvearrangement and is arranged to be closed when the compressed air valveis operated and to be opened when the dispensing operation is completedin order to relieve the air pressure which might otherwise accumulate.

In a. more specific embodiment of the invention I provide a dischargevalve designed to be connected with the fluid discharge pipe from astorage receptacle and an air valve having connection with means forsupplying compressed air thereto and connected with a pipe leading tothe said storage receptacle to which it supplies compressed air. Thesetwo valves are connected with a common operating member and arranged sothat the fluid discharge valve opens in advance of the air valve andremains open during the entlre open period of the air valve. Between theair valve and the means for supplylng compressed air a cut off valve isdisposed and correlated with the common operating member in such a wayas to be open when the air valve is opened and to be closed when the airvalve is closed. By this arrangement the air is positively cut oil butthe discharge valve still remains open. The air valve may also bearranged to admit compressed air in an increasing volume as it isopened, and by this means it is possible by slightly opening the airvalve to cause a slow discharge of the fluid, but by opening the airvalve to a point where a greater volume of air is admitted the discharge will be much faster. An air release valveis mounted adjacent theair valve and normally stands open to release any air in the pipe ortank below the air valve and this release valve or vent is provided withmeans of a simple nature which is operated to closesaid valve when it isdesired to operate the other valves to discharge liquid. It is evidentthat where the air valve is opened to admit a considerable volume of airit may be closed and the liquid discharged by; reason of the expansionof the air. Where it is desired to dispense only a small quantity ofliquid it is obvious that only a slight opening of the air valve wouldbe required, but where it was necessary to dispense a large quantity theair valve would be opened to its maximum point and after a quantity ofthe liquid had been discharged the air valve could be closed and theremainder of the quantity discharged by the expansion of the air and thewhole dispensation quickly and accurately carried out. It is understoodthat when the desired amount of liquid has been discharged the dischargevalve is cut off.

The invention will be more readily understoodfrom a reading of thefollowing specification and by reference to the accompanying drawings,in which an example of the invention is illustrated, and wherein- Figure1 is a view showing mechanism constructed in accordance with thisinvention, a portion being illustrated in vertical section and otherportions 111 elevation,

Fig. 2 is a transverse vertical sect1onal view taken on the line 22 ofFig. 1,

Fig. 3 is a cross sectional detail of the air valve, and

Fig. 4 is a diagrammatical view showing the relative positions of theopenings or passages in the discharge valve and the air valve.

In the drawings the numeral 1 designates a discharge pipe leading from astorage receptacle and 2 a compressed air supply pipe leading to thereceptacle. The pipe2 is connected with a sleeve 3 on which a dischargevalve 4 is mounted. The discharge valve carries an elbow 5 which hasconnection with a trap 6 by means of a T-jomt 7 from which the trapdepends, while a discharge connection 8 leads from the top of the part 7and is provided with a coupling 9 by which it may be secured to a meter(not shown) or any other discharging medium. The part 3 has a lateralextension 10 which rigidly supports a joint 11 to the lower end of whichthe pipe 2 is connected and which supports at its upper end an air valve12. The discharge valve and the air valve are transversely alined. Thedischarge valve has a tapered plug 13 provided with a socket stem 14while the air valve has a tapered plug 15 provided with a socket stem16. The stems 14 and 16 are adjacent and receive the square lugs 17 ofan operating lever 18 disposed between the valves. By swinging thislever the valve plugs are rotated.

An angular connection 19 leads from the top of the air valve 12 to a cutofi valve 20 which is connected with a source supplying compressed airand not shown. This valve 20 is of ordinary construction having a spring21 acting to seat a valve head 21 operated by alever 22 which whendepressed pulls the valve head from its seat and when released permitsthe spring to seat the valve. The lever 22 has its end in the path ofthe rounded end 23 of the lever 18. It

will be seen that normally the end 23 is not in engagement with thelever 22 and thus said lever may be swung upward for a period withoutoperating the lever 22 and without admitting compressed air to the valve12. The plug 13 has a passage 24 'ex-.

thereto. By a continued upward movement of the lever 18 the end 23 isbrought into contact with the lever 22 whereby the latter is depressedand the valve head 21 unseated thus permitting compressed air to pass tothe valve 12. At substantially the same time the tip of the duct 26 isbrought under the opening in the valve 12 so that compressed air ispermitted to pass to the part 11 and pipe 2 thus acting on theliquid'and causing its discharge through the valve 4. The farther upwardthe lever 18 is swung the greater will be the volume of air admitted tothe pipe 2 until the maximum supply is obtained.

The lever 18 is provided with a lateral finger 27 while the rim of thevalve 12 is provided with an indicating mark 28 located so that when thefinger registers with said mark a further upward movement of the leverwill immediately bring the tip of the duct 26 under the opening of thevalve 12,

and by swinging the lever downward so that the finger is carried belowthe mark 28 the air is cut off. It will be seen that by swinging thelever 18 so that the finger passes above the mark 28 a volume of airwill be admitted to the pipe 2 and the valve 4 opened to discharge theliquid. Now if the lever 18 is swung downwardly so that the fingerregisters with the mark 28 the end 23 is swung above the lever 22 andthe plug 15 is turned so that the passage 25 and duct 26 are cut off.This positively cuts off the supply of compressed air to the pipe 2 butleaves the valve 4 about half open so that the liquid may be freelydischarged. The compressed air which has been delivered to the pipe 2will now expand and by reason of this expansion the liquid will bedisplaced and discharged through the valve 4. By this arrangement aconsiderable saving of compressed air is had and full advantage of theexpansive force of the air is taken.

It is obvious that when the required amount of liquid has been dispensedthe lever 18 is swung downwardly to cut off the discharge valve 4 andshould the expanding air fail to deliver all of the liquid required moreair can be easily admitted. Frequently an excess of air in the pipe 2would be had after 29 projects laterally from the connection 11 and issubstantially the same in construction as the valve being provided witha spring pressed valve (not shown) and an operating lever 31. The lever31 has its end penetrated by a rod 32 carrying a turn buckle 33 on itslower end and having connection at its upper end with a spring 34.suitably suspended. The tension of the spring 34 is greater than thetension of the spring of the valve 30 so that the part 33 is pulled upagainst the lever 31 and the latter normally swung upward whereby thevalve 29 is normally open thus permitting any air in the pipe 2 and part11 to escape. The part 33 has connection by means of a rod with asuitable foot treadle (not shown) which when depressed pulls the parts32 and 33 downward against the tension of the spring 34 whereby thelever 31 is freed and the valve 29 permitted to seat. Thus when theoperator is about to dispense liquid he must depress the connection 35in order to close the valve 29 or the air would escape. As soon as hecompletes the operation and relieves the pressure on the part 35 thespring 34 swings the lever 31 and opens the valve 29 thus releasing anyaccumulating air and at the same time providing a safety outlet which isautomatic so far as its opening operation is concerned.

What I claim is,

1. In a fluid dispensing control, the combination of a fluid dischargevalve, an air admitting valve correlated with the discharge valve, thedischarge valve being arranged to open in advance of the air valve, theair valve being arranged to be opened and closed while the dischargevalve is open to admit a charge of compressed air and permit the same toexpand to discharge a fluid through the discharge valve, and an airrelease valve arranged to normally stand open and to be closed when theair valve is opened.

2. In a fluid dispensing control, the combination with an air admittingvalve, a fluid discharge valve, and an air cut-oil valve, or a commonoperating member connected with the air admitting valve and thedischarge valve, said member being mounted to travel a portion of itsmovement before operating the air cut-off valve.

3. In a fluid dispensmg control, an air admitting valve, a fluiddischarge valve, an air cut-off valve, and a common operating member forall of said valves, in combination with an air release valve normallyopen, and means for closing said air release valve when said othervalves are operated.

1. In a fluid dispensing control, the combination of an air admittingvalve, a fluid discharge valve located opposite the air valve, thedischarge valve having a passage such as to be opened in advance of theair valve and to remain open during the open period of the air valve, anoperating lever positively connected with the valves for operating thesame in common, and an air cut-off valve in advance of the air admittingvalve having an operating element in position to be operated by thelever.

5. In a fluid dispensing control, the combination of an air admittingvalve, a fluid discharge valve located opposite the air valve, thedischarge valve having a passage such as to be opened in advance of theair valve and to remain open during the open period of the air valve, anoperating lever positively connected with the aforesaid valves foroperating the same in common, an air cut-off valve in advance of the airadmitting valve having an operating element in position to be operatedby the lever, and a spring closed air release valve beyond to the airadmitting valve, resilient means normally holding said release valveopen, and means for overcoming said resilient means to permit the airrelease valve to close.

6. In a fluid dispensing control, the combination of a fluid dischargevalve, a valve plug mounted in the discharge valve, an air admittingvalve, a valve plug mounted in the air valve, the discharge valve plughaving a passage considerably larger than the passage of the air valveplug, an operating lever connected with the valve plugs so as to beswung to rotate said plugs, the passage 01 the discharge valve plugbeing positioned to be opened during the initial movement of the leverWhile the passage of the air valve plug remains closed,'and an indicatorassociated with the lever showing the point in its movement at which thepassage of the air valve plug opens, in combination with an air cut-ofl'valve arranged to be opened by the lever.

In testimony whereof I aiflx my signature.

JOHN J. CATRON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner-of Eatents, Washington, 1). 0.

